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Regional Distribution Of Monsoon And Desert Dust Signals Recorded In Asian Glaciers, Cameron P. Wake, Paul Andrew Mayewski, Xie Zichu, Wang Ping, Li Zhongquin
Regional Distribution Of Monsoon And Desert Dust Signals Recorded In Asian Glaciers, Cameron P. Wake, Paul Andrew Mayewski, Xie Zichu, Wang Ping, Li Zhongquin
Earth Science Faculty Scholarship
Short‐term (6 months to 17 years) glaciochemical records have been collected from glacier basins throughout the mountains of central Asia. The spatial distribution of snow chemistry in central Asia is controlled predominantly by the influx of dust from the arid and semi‐arid regions in central Asia. The glaciochemical data suggests that glaciers which are removed from large source areas of mineral aerosol, such as those in the Himalaya, the Karakoram, and the southeastern Tibetan Plateau, are the ones most likely to contain longer‐term glaciochemical records which detail annual to decadal variation in the strength of the Asian monsoon and long‐range …
Tb150: Water Tables, Soil Temperatures, And Morphological Characteristics In Selected Maine Soils, Paul A. Hughes, Krysztof A. Lesniewicz, Robert V. Rouke
Tb150: Water Tables, Soil Temperatures, And Morphological Characteristics In Selected Maine Soils, Paul A. Hughes, Krysztof A. Lesniewicz, Robert V. Rouke
Technical Bulletins
Water table and soil temperature data were collected from 34 soil map units representing 17 different soil series in Maine. Soil morphology was also described at each site. Water table height, soil temperature, and morphological data are presented for each map unit studied. Relationships between water table heights and duration, and the morphological characteristics of the soils are discussed.
Possible Effects Of Anthropogenically-Increased Co2 On The Dynamics Of Climate: Implications For Ice-Age Cycles, Barry Saltzman, Kirk A. Maasch, Mikhail Ya. Verbitsky
Possible Effects Of Anthropogenically-Increased Co2 On The Dynamics Of Climate: Implications For Ice-Age Cycles, Barry Saltzman, Kirk A. Maasch, Mikhail Ya. Verbitsky
Earth Science Faculty Scholarship
A dynamical model, developed to account for the observed major variations of global ice mass and atmospheric CO2 during the late Cenozoic, is used to provide a quantitative demonstration of the possibility that the anthropogenically-forced increase of atmospheric CO2, if maintained over a long period of time (perhaps by tectonic forcing), could displace the climatic system from an unstable regime of oscillating ice ages into a more stable regime representative of the pre-Pleistocene. This stable regime is characterized by orbitally-forced oscillations that are of much weaker amplitude than prevailed during the Pleistocene.
Methanesulfonic Acid In Coastal Antarctic Snow Related To Sea‐Ice Extent, K. A. Welch, Paul Andrew Mayewski, S. I. Whitlow
Methanesulfonic Acid In Coastal Antarctic Snow Related To Sea‐Ice Extent, K. A. Welch, Paul Andrew Mayewski, S. I. Whitlow
Earth Science Faculty Scholarship
Proxy records of biogenic sulfur gas obtained from ice cores suggest that variability in marine biogenic sulfur emissions may reflect changes in climate [Saigne and Legrand, 1987; Legrand et al., 1988, Legrand et al., 1991; Anderson and Charlson, 1991]. Increased sea‐ice extent has previously been proposed as one cause of relatively high methanesulfonic acid (MSA) in glacial‐age ice core samples [Gibson et al., 1990]. We have analyzed MSA, one of the oxidation products of the biogenic sulfur gas dimethylsulfide [Hatakeyama et al., 1985], from snowpit samples recovered from a coastal site in Southern Victoria Land, Antarctica. Time series of MSA …
Greenland Ice Core Greenland Ice Core "Signal" Characteristics: An Expanded View Of Climate Change, Paul Andrew Mayewski, L. D. Meeker, M. C. Morrison, M. S. Twickler, S. I. Whitlow, K. K. Ferland, D. A. Meese, M. R. Legrand, J. P. Steffensen
Greenland Ice Core Greenland Ice Core "Signal" Characteristics: An Expanded View Of Climate Change, Paul Andrew Mayewski, L. D. Meeker, M. C. Morrison, M. S. Twickler, S. I. Whitlow, K. K. Ferland, D. A. Meese, M. R. Legrand, J. P. Steffensen
Earth Science Faculty Scholarship
The last millenium of Earth history is of particular interest because it documents the environmental complexities of both natural variability and anthropogenic activity. We have analyzed the major ions contained in the Greenland Ice Sheet Project 2 (GISP 2) ice core from the present to ∼674 A.D. to yield an environmental reconstruction for this period that includes a description of nitrogen and sulfur cycling, volcanic emissions, sea salt and terrestrial influences. We have adapted and extended mathematical procedures for extracting sporadic (e.g., volcanic) events, secular trends, and periodicities found in the data sets. Finally, by not assuming that periodic components …
The Spatial Variation Of Asian Dust And Marine Aerosol Contributions To Glaciochemical Signals In Central Asia, C. P. Wake, Paul Andrew Mayewski
The Spatial Variation Of Asian Dust And Marine Aerosol Contributions To Glaciochemical Signals In Central Asia, C. P. Wake, Paul Andrew Mayewski
Earth Science Faculty Scholarship
Short-term (6 months to 17 years) glaciochemical records have been collected from several glacier basins in the mountains of central Asia. The spatial distribution of snow chemistry in central Asia is controlled by the influx of dust from the large expanse of arid and semiarid regions in central Asia. Glaciers in the Northern and Western Tibetan Plateau show elevated concentrations and elevated annual fluxes of calcium, sodium, chloride, sulphate and nitrate due to the influx of desert dust from nearby arid and semi-arid regions. Glaciers in the Southeastern Tibetan Plateau show lower concentrations and lower annual fluxes of major ions …
Canadian Provincial Perspective On Climate Change, Mark Victor
Canadian Provincial Perspective On Climate Change, Mark Victor
Maine Policy Review
Global climate change has garnered some media attention, but has failed to gather the attention of most governmental decision makers and the public. In an effort to advance concerns about the issue, the New England Governors and Eastern Canadian Premiers sponsored a three-day symposium on climate change last May 19-21 in Portland. At the symposium, scientists and public officials from both the U.S. and Canada explored the science of climate change, the potential implications and impact of climate change on this region, and the possible policy responses. Mark Victor [and James Bruce and Dean Marriot, this issue] reflecting the breadth …
Regional Response Options To Global Climate Change, James P. Bruce
Regional Response Options To Global Climate Change, James P. Bruce
Maine Policy Review
Global climate change has garnered some media attention, but has failed to gather the attention of most governmental decision makers and the public. In an effort to advance concerns about the issue, the New England Governors and Eastern Canadian Premiers sponsored a three-day symposium on climate change last May 19-21 in Portland. At the symposium, scientists and public officials from both the U.S. and Canada explored the science of climate change, the potential implications and impact of climate change on this region, and the possible policy responses. James Bruce [and Dean Marriott and Mark Victor, this issue] reflecting the breadth …
Implications Of The Clean Air Act Amendments For The Northeast, Joseph Belanger
Implications Of The Clean Air Act Amendments For The Northeast, Joseph Belanger
Maine Policy Review
The Clean Air Acts Amendments (CAA) of 1990 continue to affect public policy at the federal, state and local levels of government. At the PURE ’93 Conference last January, "Alternatives to Traditional Regulation," one panel explored the implications of the CAA on the Northeast. Joseph A. Belanger of the Connecticut Department of Environmental Protection provided this assessment of Title 1 of the CAA, particularly with respect to ozone attainment requirements.
Maine’S Public Interest Groups: The Natural Resources Council Of Maine
Maine’S Public Interest Groups: The Natural Resources Council Of Maine
Maine Policy Review
The actors in public policy include not only elected and appointed public officials, but also the public interest groups that promote various agendas. To help understand the perspectives of some of these groups, Maine Policy Review continues its profile of Maine's public interest groups in each issue, featuring in this article the Natural Resources Council of Maine.
Bridging The Gap Between Energy And The Environment, John Flumerfelt
Bridging The Gap Between Energy And The Environment, John Flumerfelt
Maine Policy Review
Energy and environmental policies have always been intertwined, but the exact nature of those interrelationships is often difficult for the non-technical reader to understand. In an analysis that was originally included in an appendix of the Report of the Maine Commission on Comprehensive Energy Planning, the former director of Maine's Office of Energy, John Flumerfelt, provides a clear and concise graphical summary of the relation between energy use and air pollution in Maine. His presentation frames the issues in ways that identify important energy and environmental questions for the state.
Climate Change Policy: Mixing Politics And Uncertainty, Dean Marriott
Climate Change Policy: Mixing Politics And Uncertainty, Dean Marriott
Maine Policy Review
Global climate change has garnered some media attention, but has failed to gather the attention of most governmental decision makers and the public. In an effort to advance concerns about the issue, the New England Governors and Eastern Canadian Premiers sponsored a three-day symposium on climate change last May 19-21 in Portland. At the symposium, scientists and public officials from both the U.S. and Canada explored the science of climate change, the potential implications and impact of climate change on this region, and the possible policy responses. Dean Marriott [and James Bruce and Mark Victor, this issue] reflecting the breadth …